A flash webbing webbing cold press apparatus

Abstract

The utility model discloses a kind of flash net cloth webbing cold-pressing equipment, which mainly includes conveying net belt for carrying and conveying fiber, first cold-pressing roller assembly for preliminary cold-pressing fiber in cooperation with conveying net belt, and second cold-pressing roller assembly arranged downstream of first cold-pressing roller assembly. Second cold-pressing roller assembly includes upper press roller and lower roller, which are arranged in correspondence with each other and define an extrusion channel between them. The upper press roller and the lower roller apply pressure to the net cloth and are used to cold-press the preliminarily formed net cloth again. The utility model uses rollers with high surface finish for re-cold-pressing through the second cold-pressing roller assembly, especially in the case of direct support of the net cloth after it has basically separated from the conveying net belt. This can significantly improve the flatness and surface quality of the net cloth, eliminate the pilling phenomenon, and meet the subsequent process requirements.

Description

Technical Field

[0001] This utility model relates to the technical field of ultrafine fiber flash spinning and web forming equipment, and more specifically, to a flash spinning web forming and cold pressing equipment. Background Technology

[0002] In the ultrafine fiber flash spinning web forming process, after the fiber material is spun out by a spinneret, it is usually laid on a continuously running conveyor belt. A negative pressure adsorption device is often installed under the conveyor belt to assist in the uniform formation of the fiber web. Subsequently, the fiber layer is pressed between the first cold press roller and the conveyor belt along with the conveyor belt to form a web with a certain strength.

[0003] In existing flash spinning web forming equipment, the conveyor belts mostly employ a woven structure. These woven belts have numerous mesh openings. When the fiber layer is pressed into a preliminary web by the first cold-press roller, the surface of the web is easily affected by the woven belt structure, producing imprints corresponding to the belt's texture. Simultaneously, the fiber ends tend to stand upright, resulting in a fuzzy and uneven surface on the formed web. This poor surface quality not only affects the final appearance and performance of the product but also adversely impacts subsequent finishing processes such as coating, lamination, and hot pressing, potentially leading to increased defect rates or failure to meet the production requirements of high-quality products.

[0004] Therefore, how to provide a device that can effectively improve the problems of fuzzing and unevenness of the mesh after flash spinning, web laying and cold pressing, and thus improve the overall quality of the mesh to meet the needs of subsequent precision processing, has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] The purpose of this invention is to provide a device that can effectively improve the problems of fuzzing and unevenness of the mesh after flash spinning, web laying and cold pressing, thereby improving the overall quality of the mesh to meet the needs of subsequent precision processing.

[0006] This utility model provides a flash evaporation mesh forming and cold pressing device, comprising:

[0007] Conveyor belts are used to carry and transport fibers and initially formed mesh fabric.

[0008] The first cold press roller assembly includes a first press roller that cooperates with the conveyor belt to perform preliminary cold pressing of fibers laid on the conveyor belt into fabric.

[0009] The second cold press roller assembly is located downstream of the first cold press roller assembly and is used to further cold press the mesh fabric that has been initially cold pressed by the first cold press roller assembly. The second cold press roller assembly includes an upper press roller and a lower press roller. The upper press roller and the lower press roller are arranged vertically and vertically to define a compression channel between them for further cold pressing of the mesh fabric.

[0010] Optionally, the equipment also includes a synchronous drive mechanism, wherein the lower roller is the driving roller, and the synchronous drive mechanism is connected between the lower roller and the conveyor belt, and synchronizes the movement of the lower roller and the conveyor belt so that the linear speed of the lower roller is consistent with the linear speed of the conveyor belt.

[0011] Optionally, the synchronous drive mechanism includes a motor, which drives the conveyor belt and the lower roller together through a transmission mechanism.

[0012] Optionally, the transmission mechanism includes:

[0013] The first synchronous pulley is mounted on a driven or driving roller of the conveyor belt;

[0014] The second synchronous pulley is mounted on the lower roller of the second cold press roller assembly, which serves as the drive roller; and,

[0015] A synchronous belt connects the first and second synchronous pulleys, synchronizing the linear speed of the conveyor belt with the linear speed of the lower roller, which acts as the drive roller.

[0016] Optionally, the transmission mechanism includes:

[0017] The first synchronous sprocket is mounted on a driven or driving roller of the conveyor belt;

[0018] The second synchronizing sprocket is mounted on the lower roller of the second cold press roller assembly, which serves as the drive roller; and,

[0019] A chain connects the first and second synchronous sprockets, synchronizing the linear speed of the conveyor belt with the linear speed of the lower roller, which acts as the drive roller.

[0020] Optionally, the second cold press roller assembly also includes a pressure applying mechanism for driving the upper press roller to move in the direction of the lower roller and applying pressure to the mesh fabric between the two.

[0021] Optionally, the pressure-applying mechanism is a pneumatic cylinder, a hydraulic cylinder, or an electric telescopic mechanism.

[0022] Optionally, the surfaces of the upper pressure roller and / or the lower roller are polished to form roller surfaces suitable for improving the flatness of the mesh.

[0023] Optionally, the lower roller is a steel roller.

[0024] Optionally, the second cold-pressing roller assembly is installed outside the main load-bearing path of the conveyor belt, so that the mesh fabric is removed from the direct support of the conveyor belt when entering the second cold-pressing roller assembly.

[0025] Based on the technical content disclosed in this utility model, the following beneficial effects are achieved:

[0026] The flash-formed mesh cold-pressing equipment provided by this utility model adds a second cold-pressing roller assembly after the traditional first cold-pressing roller assembly for further cold-pressing the initially formed mesh. Since the second cold-pressing roller assembly can have a polished surface to achieve a high degree of smoothness, and its pressing process can be designed to be carried out under conditions where the mesh has largely detached from the textured woven conveyor belt for direct support, it can effectively improve or reduce surface fuzzing, marks, and unevenness caused by the woven belt structure. This improves the flatness and surface quality of the mesh, thus better meeting the requirements of subsequent complex processes such as coating, printing, and precision lamination for high-quality base fabric.

[0027] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0028] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0029] Figure 1 This is a structural diagram of the flash evaporation mesh forming and cold pressing equipment of this utility model.

[0030] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0031] Figure 3 This is a top view of the flash evaporation mesh forming and cold pressing equipment of this utility model.

[0032] Explanation of reference numerals in the attached drawings: 1. Conveyor belt; 2. First pressure roller; 3. Upper pressure roller; 4. Lower roller; 5. Pressure application mechanism; 6. Motor; 7. First synchronous pulley; 8. Second synchronous pulley. Detailed Implementation

[0033] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0034] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0035] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0036] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0038] Reference Figure 1 , Figure 2 and Figure 3 As shown, this utility model provides a flash-blown mesh forming and cold-pressing device. The core technical concept of this device lies in adding a second independent cold-pressing process to the conventional method of using a conveyor belt 1 to carry fibers and using a first pressure roller 2 in conjunction with the conveyor belt 1 for the first cold-pressing process. This second cold-pressing process is achieved through a second cold-pressing roller assembly, and preferably, a pressure roller with a high-gloss surface is used to finely finish the mesh, thereby overcoming the defects of easy fuzzing and unevenness of the mesh in the prior art.

[0039] In one specific embodiment, the flash-blown mesh forming and cold-pressing equipment includes a conveyor belt 1 for carrying and transporting ultrafine fibers extruded from a spinneret (not shown in the figure, a conventional configuration in the art). A first cold-pressing roller assembly is configured along the operating path of the conveyor belt 1. This first cold-pressing roller assembly mainly includes a first pressure roller 2, which is located above the conveyor belt 1 and cooperates with it. For example, by controlling the gap or pressure between the first pressure roller 2 and the conveyor belt 1, the ultrafine fibers laid on the forward-moving conveyor belt 1 are initially compacted, causing the fibers to initially bond and form a mesh with a certain shape and strength.

[0040] Downstream of the first cold press roller assembly, a second cold press roller assembly is installed. The pre-formed mesh fabric, pressed and output from the first cold press roller assembly, continues to be conveyed forward and enters the second cold press roller assembly for further cold pressing. The second cold press roller assembly mainly consists of an upper pressure roller 3 and a lower roller 4, which are arranged vertically to define a compression channel between them. This channel allows for relative movement to clamp and apply pressure to the mesh fabric passing through it. Preferably, the second cold press roller assembly is installed outside the main bearing path of the conveyor belt 1. This means that when the mesh fabric enters the second cold press roller assembly for pressing, it may have already left the direct and full support of the conveyor belt 1, or the conveyor belt 1 may no longer serve as the main support surface for the second cold pressing, thus avoiding the influence of the weave of the woven belt 1 on the final flatness of the mesh fabric.

[0041] In this embodiment, the lower roller 4 of the second cold press roller assembly is specifically a steel roller. To achieve effective driving and precise control of the mesh fabric, the lower roller 4 is designed as an active roller. The upper roller 3 is subjected to downward, controllable pressure by a pressure applying mechanism 5, ensuring close contact with the lower roller 4 and compacting the mesh fabric passing between them. The pressure applying mechanism 5 can be flexibly selected, for example, driven by a cylinder. By precisely adjusting the gas pressure supplied to the cylinder, the pressure applied to the mesh fabric between the upper roller 3 and the lower roller 4 can be easily controlled and adjusted to accommodate different compaction requirements for mesh fabrics of different weights, thicknesses, or materials. For example, in a preferred embodiment, the linear pressure applied to the mesh fabric between the upper roller 3 and the lower roller 4 of the second cold press roller assembly can be adjusted as needed within the range of 10 N / mm to 30 N / mm. "Of course, the pressure applying mechanism 5 can also be a hydraulic cylinder, or any other mechanical device capable of stably applying and precisely controlling downward pressure, such as an electric telescopic mechanism (e.g., driven by a servo motor to a ball screw or crank-connecting rod mechanism). In order to obtain a highly flat mesh surface, the surfaces of the upper pressure roller 3 and the lower roller 4 of the second cold pressure roller assembly, especially the working surfaces that are in direct contact with the mesh, are precisely polished to form roller surfaces with high smoothness, suitable for improving the flatness of the mesh."

[0042] To ensure uniform and smooth force distribution on the mesh fabric as it passes through the second cold-pressing roller assembly, and to avoid problems such as excessive stretching, wrinkling, or even tearing of the mesh fabric due to speed mismatch, the linear speed of the lower roller 4 of the second cold-pressing roller assembly, when acting as the driving roller, must be strictly consistent and synchronized with the running linear speed of the preceding conveyor belt 1 through a synchronization mechanism. In this embodiment, the synchronization drive mechanism may include a main drive motor 6, which drives both the conveyor belt 1 and the lower roller 4 (acting as the driving roller) through a transmission mechanism.

[0043] Combination Figure 2 The transmission mechanism can be implemented in various ways. One way is to use a synchronous belt (not shown in the figure) drive: the first synchronous belt pulley 7 is installed on the shaft end of a driven roller (or its main drive roller) of the conveyor belt 1; the second synchronous belt pulley 8 is installed on the shaft end of the lower roller 4, which serves as the drive roller of the second cold pressing roller assembly; and a high-precision synchronous belt is used to reliably connect the two synchronous belt pulleys so that the linear speed of the conveyor belt 1 is synchronized with the linear speed of the lower roller 4, which serves as the drive roller.

[0044] Another method is to use chain drive: the first synchronous sprocket is installed on the shaft end of a driven roller (or its main drive roller) of the conveyor belt 1; the second synchronous sprocket is installed on the shaft end of the lower roller 4, which is the drive roller of the second cold press roller assembly; and a chain is used to reliably connect the two synchronous sprockets so that the linear speed of the conveyor belt 1 is synchronized with the linear speed of the lower roller 4, which is the drive roller.

[0045] In this way, when the motor 6 is driven, through the precise meshing transmission of any of the above-mentioned transmission mechanisms, the lower roller 4 of the second cold pressing roller assembly, which is the active roller, will also rotate synchronously at the same linear speed as the conveyor belt 1.

[0046] The overall workflow of the equipment is as follows: Microfiber is evenly sprayed from a spinneret onto a continuously running conveyor belt 1. As the conveyor belt 1 moves, the fiber layer first passes through the first cold-pressing roller assembly (the first pressure roller 2 cooperates with the conveyor belt 1), where it is initially pressed into a mesh fabric. Subsequently, this initially formed mesh fabric continues to be conveyed forward, leaving or partially leaving the direct support of the conveyor belt 1, and enters the extrusion channel formed between the second cold-pressing roller assembly, consisting of the upper pressure roller 3 and the lower roller 4. Under the adjustable pressure provided by the pressure application mechanism 5 (such as a cylinder), and driven by the lower roller 4, which is precisely synchronized with the original conveyor belt 1 speed as the driving roller, the mesh fabric undergoes a second, more precise cold pressing. Because the roller surface of the second cold press roller assembly has extremely high surface smoothness at this time, and the influence between the mesh and the textured woven mesh belt 1 has been minimized, the pressed mesh surface is very flat and smooth, the fiber distribution is more uniform and dense, the fuzzing phenomenon is significantly and effectively suppressed, and both the appearance quality and internal quality are greatly improved. This allows it to well meet the strict requirements of various subsequent deep processing processes (such as surface coating, fine pattern printing, multi-layer material composite, etc.) for high-quality base fabric.

[0047] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model. For example, the material and surface treatment of the upper and lower rollers of the second cold pressure roller assembly, the specific type of the pressure application mechanism 5, and the specific implementation of the synchronous drive mechanism can all be adjusted and optimized according to actual production needs without departing from the core concept of this utility model.

[0048] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A flash evaporation mesh forming and cold pressing device, characterized in that, include: Conveyor belts are used to carry and transport fibers and initially formed mesh fabric. The first cold press roller assembly includes a first press roller that cooperates with the conveyor belt to perform preliminary cold pressing of the fibers laid on the conveyor belt into fabric. The second cold press roller assembly is located downstream of the first cold press roller assembly and is used to further cold press the mesh fabric that has been initially cold pressed by the first cold press roller assembly. The second cold press roller assembly includes an upper press roller and a lower press roller. The upper press roller and the lower press roller are arranged vertically and vertically to define a compression channel between them for further cold pressing of the mesh fabric.

2. The flash evaporation mesh forming and cold pressing equipment according to claim 1, characterized in that, The device also includes a synchronous drive mechanism. The lower roller is a drive roller. The synchronous drive mechanism is connected between the lower roller and the conveyor belt and synchronizes the movement of the lower roller and the conveyor belt so that the linear speed of the lower roller is consistent with the linear speed of the conveyor belt.

3. The flash evaporation mesh forming and cold pressing equipment according to claim 2, characterized in that, The synchronous drive mechanism includes a motor, which drives the conveyor belt and the lower roller together through a transmission mechanism.

4. The flash evaporation mesh forming and cold pressing equipment according to claim 3, characterized in that, The transmission mechanism includes: The first synchronous pulley is mounted on a driven or driving roller of the conveyor belt; The second synchronous pulley is mounted on the lower roller, which serves as the drive roller, of the second cold press roller assembly; and, A synchronous belt connects the first synchronous pulley and the second synchronous pulley, so that the linear speed of the conveyor belt is synchronized with the linear speed of the lower roller, which acts as the drive roller.

5. The flash evaporation mesh forming and cold pressing equipment according to claim 3, characterized in that, The transmission mechanism includes: The first synchronous sprocket is mounted on a driven roller or drive roller of the conveyor belt; A second synchronizing sprocket is mounted on the lower roller, which serves as the drive roller, of the second cold press roller assembly; and, A chain connects the first synchronous sprocket and the second synchronous sprocket, so that the linear speed of the conveyor belt is synchronized with the linear speed of the lower roller, which serves as the drive roller.

6. The flash evaporation mesh forming and cold pressing equipment according to claim 1, characterized in that, The second cold press roller assembly also includes a pressure applying mechanism for driving the upper press roller to move toward the lower roller and applying pressure to the mesh fabric between them.

7. The flash evaporation mesh forming and cold pressing equipment according to claim 6, characterized in that, The pressure-applying mechanism is a pneumatic cylinder, a hydraulic cylinder, or an electric telescopic mechanism.

8. The flash evaporation mesh forming and cold pressing equipment according to claim 1, characterized in that, The surfaces of the upper pressure roller and / or the lower roller are polished to form roller surfaces suitable for improving the flatness of the mesh fabric.

9. The flash evaporation mesh forming and cold pressing equipment according to claim 1, characterized in that, The lower roller is a steel roller.

10. The flash evaporation mesh forming and cold pressing equipment according to claim 1, characterized in that, The second cold press roller assembly is installed outside the main bearing path of the conveyor belt, so that the mesh fabric is removed from the direct support of the conveyor belt when it enters the second cold press roller assembly.

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